Methods of establishing communication sessions from multiple mobile devices as well as managing available conferencing bandwidths is disclosed. One of the methods disclosed includes establishing a communication session between mobile devices and a group of conferencing servers. The method also includes checking the load of each server. Further, the method includes determining whether the load of each server is above a predetermined threshold. Further still, the method includes routing subsequent mobile devices to communicate through specified conferencing servers selected from the group of conferencing servers if the load of particular servers is above a predetermined threshold.